... good, old time! > -----Ursprüngliche Nachricht----- > Von: Bob Landman [SMTP:[log in to unmask]] > Gesendet am: Montag, 10. Januar 2000 21:29 > An: [log in to unmask] > Betreff: Re: [DC] Reference Designators > > Yes, and the crystal was the rock crystal called galena (orginally but > later germanium and then silicon the first hermetic diodes used a cat > whisker point contact that emulated the old crystal radio sets. I > recall building a Phillmore Jr. way back when and winding my own coil > too. Reception was pretty darn good (AM stations really pump pump > ouit the power). > > These days, we use the "D" designation instead. yes, K stands for > coil, more specifically a relay coil. K on a diode is of course the > Kathode (though why it is spelled that way eludes me - maybe it's a > German derivation as in Kathode Ray tube but then the Germans call > CRTs Braun tubes for the scientist who invented them). > > Bob Landman >